636231050040 has 32 divisors (see below), whose sum is σ = 1908693150480. Its totient is φ = 169661613312.

The previous prime is 636231050023. The next prime is 636231050069. The reversal of 636231050040 is 40050132636.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2650962589 + ... + 2650962828.

Almost surely, 2^636231050040 is an apocalyptic number.

636231050040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

636231050040 is an abundant number, since it is smaller than the sum of its proper divisors (1272462100440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636231050040 is a wasteful number, since it uses less digits than its factorization.

636231050040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301925431 (or 5301925427 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 636231050040 its reverse (40050132636), we get a palindrome (676281182676).

The spelling of 636231050040 in words is "six hundred thirty-six billion, two hundred thirty-one million, fifty thousand, forty".